Page projector



June 6, 1939. A EI Z N 2,160,848

I .PAGE PROJECTOR Filed Dec. 12, 1936 s Shets-Sheet 1 INVENTOR,

I A gust D. Eta m,

ATTORNEY.

June 6; 1939.

A. D. EITZEN PAGE PROJEGTOR Filed Dec. 12. 1956 3 Sheets-Sheet 2 A Ea I INVENTOR, A1 7 t D. Eitzm BY ATTORNEY.

June 6, 1939.

' A, D. EITZEN PAGE PROJECTOR Filed Dec; 12, 1956 s Sheets-Sheec 5 Patented June 6, 1939 UNITED STATES PATENT QFFICE 2,160,848 PAGE PROJECTOR Application December 12, 1936, Serial No. 115,513

7 Claims.

In in which the lamp housing and associated optical.

system may be moved vertically relative to the printer without affecting the position of the tape while it passes through the printer or without aifecting the tape as it is ejected for inspection H by an attendant.

It is still another object of the present invention to provide an improved feed for drawing the tape across the light aperture and then into an inspection field.

20 It is still another object of the present invention to provide an improved cabinet including an optical system for eifecting front projection.

It is still another object of the present inven- Y tion to provide an improved cabinet for a page projector associated with a severing mechanism for severing sections 'of the tape after it is printed.

- It is still another object of the present invention to provide an improved page printer includ- 1 ing tape pulling and rewinding devices so ar- 30 ranged that the tape may be drawn across the light aperture of a projector for projection and subsequently drawn into an inspection field at which inspection field the tap may be unwound from the rewind device for inspection and sub- 35 sequently rewound without in any way interrupting the printer projection or tape puller.

It is still another object of the present invention to provide an improved page printer including a cabinet having guides for directing the path 40 of movement of the tape from a projection field to an inspection field and thereupon to a rewind reel from which rewind reel the tape may be unwound for inspection. without interfering with the printer projection or tape puller and the tape 45 subsequently automatically rewound onto the rewind reel.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of-specific embodi- 50 ments thereof illustrated in the accompanying drawings in which Figure 1 is a perspective of an improved cabinet and mirror housing associated therewith made according to one embodiment of the present in- 55 vention;

:- as it is being printed is passed through a light Fig. 2 is a section on the line 2--2 of Fig. 1; Fig. 3 isan enlarged fragmental section. of a portion of the optical system;

Fig. 4 is an enlarged fragmental section showing a part of the tape pulling mechanism; 5 Fig. 5 is an enlarged fragmental section on the line 55 of Fig. 4;

Fig. 6 is a fragmental perspective of a part of the tape pulling mechanism;

Fig.7 is a fragmental front elevation partly in section of a tension device associated with the tape pulling mechanism;

Fig. 8 is a fragmental front elevation of another embodiment of the present invention;

Fig. 9 is a section on the line 9-9 of Fig. 8;

Fig. 10is an enlarged fragmental section of a tape severing devicewhich may be associated with the embodiment illustrated in Fig. 1; and

Fig. 11 is a fragmental front elevation of the severing mechanism shown in Fig. 10.

In the embodiment shown in Figs. 1 to 7 inclusive, there is provided a cabinet I having a rear wall 2, side walls 3, interrupted front walls 4 and 5 fixed to one another. The front walls 4 and 5 are spaced from one another to receive a door 6 which, see Fig. 2, has a flange at its lower end to engage the inner face 01 the wall portion 5 and a suitable lock or latch 8 at the upper end to cooperate with the lower inner face of the wall portion 4. To facilitate removing the door 6, there is provided the recess 9 for engagement by. the hand of the operator.

In the present instance, the cabinet is preferably provided with a platform III on which is mounted the printer I l to which the tape T passes from the roll l2 mounted on the spindle l3 journaledin the bracket l4 supported on the base l5 of the cabinet. On the base l5 and in the compartment formed between it and the platform I ll,

there may be located various adjuncts for the projection machine lamp, such as the lamp relays contained in the housing It as an instance. In engagement with the tape T and extending upwardly from the base l5, there is preferably provided the resilient wire I! acting as a whisker to apply tension on the tape and form slack in the same between the roll l2 and printer I I. The printer II is provided with the usual printing mechanism and line feed device not shown in detail and is of' the type in which after a. line is printed the tape is fed upwardly a line space at a time. After the tape leaves the ticker, it passes up between the guide rollers I 8 and I 8 to the mouth of the lamp housing formed as a recess between the inclined mirror, l9 supported on the inclined wall 28 and the inclined wall 2| on which the cut condenser 22 rests.

As the tape enters this recess, it passes the light aperture 23 adjacent to the cut condenser 22 and then passes upwardly parallel to and along the rear wall 24 of the lamp housing through a recess formed in the bracket 25 of the objective lens unit casing 26 and then passes up to the fixed guide roller 21 mounted in the cheek plates 28 extending parallel to one another and supporting the upper ends of the rods 29 and 38.

The rods 29 and 38 are secured at their lower ends to the bracing bars 3| extending from the edges of the rear wall 2. The cheek plates 28 are supported by the crosspiece 32 extending across the back of the cheek plates 28 and secured at its ends to the side walls 3 of the cabinet I.

From the guideroller 21, the tape T passes under the roller 33 formed at the ends of the levers 34 secured to the shaft 35 which is journaled in the cheek plates 28. From the roller 33, the tape passes up over the idler roller 36 and then down under the roller 31 rotatably mounted on the rod 38 fixed at its ends to the arms 39 and 48 extending down from the arms 4| and 42 secured at their upper ends to the inner faces. of the cheek plates 28. On the rod 38, there are pivotally mounted the arms 43 and 44 connected at their upper ends to the rod 45 having journaled thereon the pressure rollers 46 and 41 for engagement with the tape in order to press the tape into firm engagement with the feed roller 48, when the tape pulling action occurs.

The pressure of the rollers 46 and 41 is produced by the torsion springs 49 and 58 connected at one end to the collars 5| and 52 fixed to the rod 38 and wound around the rod 38 and connected at their other ends to the lower ends of the arms 43 and 44. The tape pulling roller 48 in the present instance is indicated as composed of a cylinder provided with a cap 53 containing a conical recess to receive the conical end 54 of the pivoting pin 55 mounted in the bearing 56 secured to the lower end of the arm 42 and the other end of the roller 48 is conformed to receive the inner shoulder 51 of the disc 58 fixed to the shaft 59 journaled in the bearing 68 located at the lower end of the arm 4|. The outer end of the shaft 59 is journaled in the lower end of the arm 6| extending down from the crosspiece 32. On the shaft 59, there is fixed the gear 62 in mesh with the gear 63, see Fig. 6, rotatably mounted on the shaft 64 journaled in the arm 6|. The gear 63 is fixed to the toothed wheel 65 in the present instance provided with four teeth 66, which toothed wheel 65 is in turn in frictional engagement with the hub '61 of the sheave 68 connected by the belt 69 with the sheave 18 on the shaft 1| journaled in the casing I2 and drivingly connected with the shaft of the motor 13 secured to the side wall 3.

For frictionally maintaining the hub 61 of the sheave 68 in driving engagement with the toothed wheel 66, there is provided the compression spring 14 tensed between the disc 15 and the side of the sheave 68.

From the foregoing, it will appear that as it is here intended, the motor by continuously operating would continuously draw the tape upward from the printer I or tend to draw it upward unless the actuation of the gear 63 were interrupted. In order intermittently to interrupt the actuation of the gear 63 when the tape is at rest in the printer, there is provided the pawl 16 slidably mounted on the pin I and pivotally connectedat one end to the arm 18 fixed to the shaft 35.

In the present instance, the pawl 16 is provided with a slot 19 through which the pin-11exten'ds.

The pawl 16 is intended normally to extend in the path of movement of the teeth 66 to interfere with the rotation of the gear 63 with the sheave 68'. This obstruction position will occur when the arms 34 are raised due to the take-up of the slack in the tape T and in consequent raising of the roller 33. With the line space feed of the printer H, however, the roller 33 due to gravity will take-up the feed so effected and permit the arms 34 to descend and thereby withdraw the pawl 16 out of the path of movement of the teeth 66 and permit the'gear 63 to be frictionally driven with the sheave 68. The moment that the slack is again taken up, however, and the arms 34 raised, they will again thrust the pawl 16 into the path of movement of the teeth 66 to obstruct the further rotation of the gear 63 and consequently the further rotation of the gear 62 and I images produced from the characters on the tape, the mechanism now to be described is pro vided.

The inclined walls 28 and 2| to, either side of the mouth through which the tape T passes are part of the lamp housing 83. In the present instance, thelamp housing 83 is provided with an inclined mirror 84 formed at the bottom thereof to receive light rays directed downwardly by the lamp 85 .with the aid of the reflector 86 and condensing-lenses 81 and 88.

The light rays so received by the inclined mirror 84 are directed outwardly through the cut condenser 22 through the tape T at the light aperture 23 onto the mirror. l9 and then upwardly through the objective lens unit in the casing 26 up through the opening 89 in the upper .wall 98 of the cabinet I. In order to effect front projection as illustrated in Fig. 2, there is preferably provided a mirror housing 9| containing an inclined mirror 92 in the path of the light terminating in the opening 96 formed in the wall 98 of the cabinet I. The chimney 95 is adapted to slide up through the opening 96 when the lamp housing is raised, it being slidably mounted on the rods 29 and 38, the sides of the lamp housing in the present instance being provided with the collars 91 on one side thereof in slidable engagement with the rod 29 and provided with the collars 98 on the other side thereof in slidable engagement with the rod 38.

If it is desired to sever the tape T from time to time as it is ejected through the opening 8|, the severing arrangement illustrated in Figs. 10 and 11' may be provided It will then only be necessary to equip the wall portion 4, as an in- Stance the wall portion 99 with a pivotallyflfi frame I02 of the opening I03. The knife I00 is preferably normally positioned to clear the opening I03 to permit the discharge of the tape T therethrough by means of the spring I04. Preferably also the raised position of the knife I00 is limited by the stop I05. When it is desired to sever a strip, it is only necessary to press the knife I00 downward so that its inclined edge I06 cooperates with the shearing shoulder I01 of the opening I08 formed in the platform I09.

If, on the other hand, it is desired to equip the machine illustrated in the embodiment of Fig. 1 with a rewind reel, the embodiment illustrated in Figs. 8 and 9 may be used.

Here, the upper wall of the cabinet I as an instance, the wall IIO may be provided with a rewind reel' I I I secured to the shaft I I2 journaled in the brackets II3 mounted on the wall H0. The shaft II2 has fixed thereon a sheave II4 connected by a spring belt H5 with a sheave I I6 fixed to the sheave III which takes the place of the sheave 08 in Fig. 6 rotatably mounted on the shaft II8 similar to shaft 64 in Fig. 6 and connected in the same manner as the arrangement shown in Fig. 6 to the tape pulling roller I I9. The movement of the tape pulling roller I20 is controlled by the movement of the roller I20 responsive to the slack in the .tape T similar to the slack take-up roller 33 of the embodiment illustrated in Fig. 1.

In the embodiment of Fig. 8, an auxiliary slack take-up is provided, to wit the roller I2I at the end of the arms I22 normally urged upwardly by a torsion spring on the shaft not shown and engaging the tape after it leaves the light aperture and before it passes to the roller I20. In this embodiment, the tape is maintained in engagement with the tape pulling roller I I9 by the pressure roller I 23 pressing the tape upwardly against the roller II9 to effect the discharge of the tape outwardly onto the platform I24 from which it passes between the two guide rollers I25 and I26 below and above the opening in the wall portion I2'I from which the tape T passes upwardly along the wall portion I2'I to and over the upper end thereof where it passes .under the tensioning roller I28 formed at the end of the arms I29 from which the tape passes onto the reel II I, the roller I28 contributing to effect a compact tight windup.

In this embodiment, it will be seen that the tape may be unwound from the reel III into the dash and dot line position shown in Fig. 9 to facilitate inspection of an extended area of tape al- ,ready wound up, without affecting the tape in engagement with the tape pulling roller II9. It will also be apparent that as soon as the tape T is then released, the reel III due tothe sheave II6 will again take up the loop.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

'the lower portion of said cabinet, and a panel supplementing said front upper wall to close the remaining front of the cabinet but removable to afford access to the interior of said cabinet, of a page printer mounted on said support with the tape extending upwardly therefrom in a vertical direction 'to said tape 'pulling mechanism'to feed the same from said printer through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable on said slideways from a position, directly above said printer to an upper position a top wall having an opening extending along the rear end thereof and a chimney orifice disposed forwardly .of said opening, a front upper wall extending down from said top wall and having a tape discharge orifice therein, a tape pulling mechanism supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upward therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, and a projector unit slidable on said slideways upwardly away from said printerto afford access thereto, said projector unit including a lamp housing positioned in the front portion of said cabinet and having a chimney extending upwardly to said chimney orifice and slidable through the same when said projector is moved upwardly away from said printer, said projector unit also having an optical system including elements to direct light rays horizontally through a portion of the vertically extending tape and then upwardly through said opening.

3. The combination with a cabinet including a top wall having an opening extending along the rear end thereof and a chimney orifice disposed forwardly of said opening, a front upper wall extending down from said top wall and having a tape discharge orifice therein, a tape pulling mechanism supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upwardly therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable on said slidepressed light rays emerging from said opening to direct them onto a screen.

4. The combination with a cabinet including a top wall having an opening extending along the rear end thereof and a chimney orifice disposed forwardly of said opening, a front upper wall extending down from said top wall and having a tape discharge orifice therein, a tape pulling mechanism supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upwardly therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable on said slideways upwardly away from said printer to afford access thereto, said projector unit including a lamp housing positioned in the front portion of said cabinet and having a chimney extending upwardly to said chimney orifice and slidable through the same when said projector is moved upwardly away from said printer, said projector unit also having an optical system including elements to direct light rays horizontally through a portion of the vertically extending tape and then upwardly through said opening, and a rewind reel mounted on the front portion of said top wall to rewind the tape as it is discharged through said discharge orifice.

5. The combination with a cabinet including a top -wall having an opening extending along the rear end thereof and a chimney orifice disposed forwardly of said opening, a front upper wall extending down from said top wall and having a tapedischarge orifice therein, a tape pulling mechanism supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upwardly therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable 'on said slideways upwardly away from said printer to afford access thereto, said projector unit including a lamp housing positioned in thefront portion of said cabinet and having a chimney extending upwardly to said chimney orifice and slidable through the same when said projector is moved upwardly away from said printer, said projector unit also having an optical system including elements to direct light rays horizontally through a portionof the vertically extending tape and .then upwardly through said opening, a rewind reel .mounted on the front portion ofsaid top wall to rewind the tape as it is discharged through said discharge orifice, and actuating means for drivingly connecting said rewind reel with said tape pulling mechanism.

6. The combination with a cabinet including the rear end thereof and a chimney orifice disposed forwardly of said opening, a front upper wall extending down from said top wall and having a tape discharge orifice therein, a tape pulling mechanism supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upwardly therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable on said slideways upwardly away fromsaid printer to afford access thereto, said projector unit including a lamp housing positioned in the front portion of said cabinet and having a chimney extending upwardly to said chimney orifice and slidable through the same when said projector is moved upwardly away from said printer, said projector unit also having an optical system including elements to direct light rays horizontally through a portion of the vertically extending tape and then upwardly through said opening, and an elongated knife pivotally mounted on the outer face of said upper front wall adjacent said tape discharge orifice, and means including a spring for normally maintaining said knife clear of said orifice to permit the ready discharge of the tape 1 through saidorifice, said knife being operable when depressed to sever the tape discharging through said orifice.

7. The combination with a cabinet including a top wall having an opening extending along the rear end thereof and a chimney orifice disposed forwardly of said opening, a front upper wall extending down from said top wall and having a tape discharge orifice adjacent the lower end thereof, a tape pulling mechainsm supported in the upper front portion of said cabinet and in communication with said tape discharge orifice, and a support in the lower portion of said cabinet, of a page printer mounted on said support with the tape extending vertically upwardly therefrom to said tape pulling mechanism to be fed by the latter through said tape discharge orifice, vertically extending slideways in the front portion of said cabinet, a projector unit slidable on said slideways upwardly away from said printer to afford access thereto, said projector unit including a lamp housing positioned in the front portion of said cabinet and having a chimney extending upwardly to said chimney orifice and slidable through the same when said projector is moved upwardly away from said printer, said projector unit also having an optical system including elements to direct light rays horizontally through a portion of the vertically extending tape and then upwardly through said opening, and a tape advancing device mounted on the front portion of said top wall for advancing the tape discharged from said discharge opening across said front upper wall.

AUGUST D. EITZEN. 

